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SECTION 03 51 13
CEMENTITIOUS WOOD FIBER DECKS
SPEC WRITE NOTES:
1. Delete between // ____// if not
applicable to project.
2. Also delete any other item or paragraph
not applicable in the section and
renumber the paragraphs.
3. Listed by UL as structural cement-fiber
units, and two manufacturers.
PART 1 - GENERAL
1.1 DESCRIPTION
Section specifies structural cement-fiber units (planks) for roof deck
// and acoustical panels //.
1.2 SUBMITTALS
A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA,
AND SAMPLES.
B. Shop Drawings:
1. Cement-fiber unit deck installation details and anchorage.
2. Show primary frames members and purlins with subpurline and opening
framing.
C. Manufacturer's Literature and Data:
1. Cement-fiber units showing compliance with specifications including
anchorage items and Installation instructions.
2. Subpurling.
3. Grout.
D. Certificates: Stating cement-fiber units meet fire hazard
classification, wind uplift requirement, and "R" values specified.
1.3 DELIVERY
Deliver units to site labeled with manufacturer's name, brand and
contents.
1.4 STORAGE
A. Store cement-fiber units and accessories in weathertight and dry storage
facility.
B. Protect from damage from handling, water, weather, and construction
operations before, during, and after installation.
1.5 APPLICABLE PUBLICATIONS
A. Publications listed below form a part of this specification to extent
referenced. Publications are referenced in text by basic designation
only.
B. American Society for Testing and Materials (ASTM):
A36/A36M-08 ............ Structural Steel
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A653/A653M-10 .......... Steel Sheet, Zinc Coated (Galvanized) or ZincIron Alloy Coated (Galvannealed) by the Hot-Dip
Process
C144-04 ................ Aggregates for Masonry Mortar
C150-09 ................ Portland Cement
C177-10 ................ Steady-State Heat Flux Measurements and Thermal
Transmission Properties by Means of the Guarded
Hot-Plate Apparatus
C423-09 ................ Sound Absorption and Sound Absorption
Coefficients by the Reverberation Room Method
C494-10 ................ Chemical Admixtures for Concrete
C1289-10 ............... Faced Rigid Cellular Polyisocynurate Thermal
Insulation Board
E84-10 ................. Surface Burning Characteristics of Building
Materials
E119-10 ................ Fire Tests of Building Construction and
Materials
E1264-08 ............... Classification for Acoustical Ceiling Products
F1667-10 ............... Driven Fasteners: Nails, Spikes and Staples
C. American Welding Society ():
D1.1-10 ................ Structural Welding Code Steel
D. Factory Mutual Engineering and Research Corporation (FM):
Annual issue ........... Approval Guide Building Materials
E. Underwriters Laboratories, Inc. (UL):
Annual issue ........... Building Materials Directory
Annual issue ........... Fire Resistance Directory
F. Warnock Heresy (WH):
Annual issue ........... Certification Listings
G. Federal Specifications (Fed. Spec.):
FF-S-107C(2) ........... Screws, Tapping and Drive
SPEC WRITER NOTES:
1. Make material requirements agree with
applicable requirements specified in
the referenced Applicable Publications.
2. Update and specify only that which
applies to the project.
3. Coordinate roof deck design with
structural Engineer to show assembly
required and section editing.
4. Coordinate details when units are used
for acoustical panels.
PART 2 - PRODUCTS
2.1 MATERIALS
A. Portland Cement: ASTM C150, Type I or III.
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B. Chemical Admixtures: ASTM C494, type as required by unit manufacturer.
C. Aggregate: ASTM C144.
D. Wood fiber:
1. Wood species: Unit manufacturers standard softwood.
2. Shredded into strips; random lengths unit manufacturers standard
specifications.
3. Treated for fire resistance.
E. Fasteners:
1. Nails: ASTM F1667, galvanized, roof type with integral 25 mm (1-inch)
washers length to provide 76 mm (1-1/2-inches) penetration into wood
support, type as required by unit manufacturer.
2. Screws: Fed. Spec FF-S-107 type as required by unit manufacturer.
a. Provide 25 mm (1-inch) wide washers when screw retains unit.
b. Provide 26 mm (1-1/2-inch) minimum penetration into wood.
SPEC WRITER NOTE: Specify physical
properties of bulb tees used on project.
Design deflection: 1/360 of span.
F. Bulb-Tee Subpurlins:
1. Fabricated from ASTM A36 steel.
2. Minimum flange bearing area each side: 50 mm (1-inch).
3. Rust inhibiting paint finish, manufacturers standard.
4. Properties:
a. Minimum weight per 0.304 mm (lineal foot: ______ Kg (_______
pounds)
b. Height: ______ MM (______inches):
c. Minimum resisting moment: ___ MM (____ inch pound).
5. Length to span not less than three supports.
G. Clips and Channels:
1. Fabricated of ASTM A446 steel sheet.
2. Thickness: Minimum 1.61 mm (0.0635-inches) for channels 1.31 mm
(0.0516-inch) for clips.
3. Clips:
a. Two piece or single piece.
b. Purlin anchor clamp designed to fasten to purlin and engage
channel.
c. Channel to engage purlin anchor clamp and hold down unit in
groove.
d. Z clamp, flange for anchoring to purlin, other flange for engaging
groove.
e. Clips provide uplift resistance of not less than 1-1/2 N (250
pounds).
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4. Channels:
a. Fabricated to fit tongue and groove of units.
b. Length to span between purlins with continuous span over three or
more purlins, ends over purlin supports.
H. Water: Clean and potable, free from imparities detrimental to grout.
I. Grout Mix:
1. Portland Cement aggregate water and admixture in proportions required
by unit manufacture.
2. Mix in mechanically operated mortar mixer. Minimum 3 minutes, Maximum
5 minutes.
3. Mix to pouring consistency.
2.2 STRUCTURAL CEMENT-FIBER UNITS
A. Labeled for fire resistance by FM, UL, or WH.
1. Flame spread: Maximum 25.
2. Smoke Developed: Not laminated to other products; maximum 5.
3. Tested per ASTM E84.
B. Manufacture planks from treated wood fibers and portland cement, bonded
under pressure.
C. Having following properties:
1. Long edges tongue and groove. // Provide rebated edges at bulb tee
bearing flange use.
2. Ends square unless shown otherwise.
3. Plank length to span two supports except for end fillers or bulb tee
supports.
4. Thermal Resistance:
a. Test in accordance with ASTM C177.
b. "R" value: // 38 mm (1-1/2-inches) thick 2.63, //.
51 mm (2-inches) thick, 3.5, //.
64 mm (2-1/2-inches thick, 4.38, // and //.
76 mm (3-inches) thick, 5.25 //.
//c. R" value _____ insulation layer over units. //
5. Noise Reduction Coefficient (NRC):
a. Tested in accordance with ASTM C423.
b. NRC Not less than: // 38 mm (1-1/2-inches) thick, 0.55 //.
51 mm (2-inches) thick 0.60 //.
64 mm (2-1/2-inches) thick 0.60 // and //
76 mm (3-inches) thick 0.65 //.
SPEC WRITER NOTE: Do not use units with
insulation bonded to units where vapor
retarder is required on insulation joint
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line. Use R of 5.56 per 25.4 mm (inch) for
calculating thickness of insulation.
6. Factory bond ASTM C1289 layer of polyisocyanurate insulation to top
plank.
a. Thickness of insulation as shown.
b. Top of insulation faced with glass fiber felt.
SPEC WRITER NOTES:
1. Verify details. Show system selected
and applicable components of system.
2. Check manufacturer's literature for
available thicknesses required to suit
span and live load, and corresponding
"R" value, NRC, subpurlin and channel
size, where applicable.
3. Design system for not less than l/240,
preferred l/360, deflection.
4. Design system for wind uplift in
accordance with FM 1-28.
5. Structural Engineer to design roof
system.
6. Support edges and ends of units at
openings greater than 200 mm (8inches).
7. Size depth of bulb tees for not less
than 13 mm (1/2-inch) grout over top of
bulb and flush with surface of unit.
PART 3 - EXECUTION
3.1 INSTALLATION
//A. Bulb tees:
1. Place bulb tees at spacing shown, aligned and straight.
2. Weld bulb tees to primary framing as shown. //
B. Plank Installation:
1. Do not use broken or cracked units.
2. Cut planks to fit tight at perimeter, vertical surfaces, projections,
// openings // ridges // valleys //.
3. Bear edges and ends of planks and at perimeter of openings greater
than 200 mm (8-inches) on framing members, // and bearing walls //
not less 25 mm (1-inch).
4. Installing Units:
a. Lay continuous units progressively with side joints (edges)
tightly butted and with end joints in adjacent rows staggered.
Install with tongue leading.
b. Nail or screw units to bearing surface. Space fasteners at 125 mm
(5-inches) between edge or corner fasteners. Unless specified
otherwise.
c. Weld clips to steel joists or beam; engaging clip into groom of
units.
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d. Install fasteners as unit is layed. Do not walk on unfastened
units.
e. Lay units with edges bearing not less than 25 mm (1-inch) on
bottom flange of bulb tees.
f. Grout bulb tee joints with units to finish flush with top of
units.
C. Install barrier, full depth of plank // plus insulation //, over top of
sound rated partitions // of exterior wall // as shown. //
3.2 PROTECTION
Provide planking or plywood to distribute weight and support heavy
material placed or transported over the roof deck.
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